new estimates show going over the fiscal cliff could cost the economy, the equivalent of four times what shoppers spent over black friday weekend. >> tom: i'm tom hudson. it's cyber monday, and shoppers are online, and spending; they'll shell out an estimated $1.5 billion online today. >> susie: and change comes to the nation's top securities regulator: mary schapiro is stepping down. we look at what's next for the securities and exchange commission, and its new leader. >> tom: that and more tonight on "n.b.r."! >> susie: americans were back at work today after a long holiday weekend, but returned to the same worries about the fiscal cliff. and a new report from the white house added to the worries, showing that unless there's a deal on solving the crisis, the u.s. economy would suffer big time. the obama administration's economists estimate consumers would spend about $200 billion less next year than they would have otherwise. congress and the administration have only a few more weeks to nail down a deal. but that deal will have to address some tough issues, including entitlement reform